I don't know if I'm underestimating HN's reach but I doubt we did that, probably traffic from a much bigger aggregator/forum

You are underestimating HN's reach, this happens all the time. As someone who has been on the front page of HN it's a pretty big rush in traffic!

I'd wager that the load is amplified by other sites that treat HN as a goldmine of tasty links.

Hacker news doesn't generate much traffic, despite what people are saying.

The host here has a limit of 160000 files served each day. That is extremely low. If the site has an icon, css, a js file and a few images it's 10 files each visit. That's will limit it to 16k visits/day. If there are more files loaded it might just handle a few thousand visits, and they have received more than that from HN now.

Wait really? I'm not really sure what to think and I posted before I saw this... I wonder why the limit is so low?